CN108687864A - A kind of blanking units and method for die cutting for exempting from silication piston - Google Patents
A kind of blanking units and method for die cutting for exempting from silication piston Download PDFInfo
- Publication number
- CN108687864A CN108687864A CN201810471808.6A CN201810471808A CN108687864A CN 108687864 A CN108687864 A CN 108687864A CN 201810471808 A CN201810471808 A CN 201810471808A CN 108687864 A CN108687864 A CN 108687864A
- Authority
- CN
- China
- Prior art keywords
- piston
- punching
- die cutting
- die
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4445—Matrices, female dies, creasing tools
Abstract
The invention discloses a kind of blanking units and method for die cutting for exempting from silication piston, blanking units are divided into die cutting die former and die cutting die formpiston, circular ring shape is equipped with around punching stretch groove on die cutting die former, annular stretches the center of circle of groove and the center of circle of punching and overlaps, the annular convex platform that fit depressions are stretched with annular is provided on the holding pad of die cutting die formpiston, method for die cutting is as follows:Piston film is inserted into the punching of die cutting die former, when punching, annular convex platform on holding pad presses against piston film and enters annular stretching groove, tractive force is generated to piston on the piston film that drawing force passes between annular stretching groove and punching, make piston that flexible deformation occur, piston punching face is tightly attached on the punching wall of former, then the punching pin in die cutting die punch hole declines, piston is separated from piston film, it obtains being punched and exempts from silication piston towards piston centre axis is inclined, when syringe slides, it will not be in contact with needle cylinder wall, it not will produce resistance to sliding.
Description
Technical field
The invention belongs to piston Punching Technology fields, and in particular to a kind of blanking units that exempting from silication piston and punching side
Method.
Background technology
Traditional piston is punched mode, and punching face is for plane or with jagged arcwall face(The patent No.:
201721233382.8), when testing piston sliding capability, due to the obstruction in punching face, the resistance to sliding of piston is caused to increase,
Test result is usually unqualified, therefore needs that a certain amount of silicone oil is added in piston cleaning process, and silicone oil is deposited on punching face,
When testing sliding force, silicone oil can be substantially reduced resistance to sliding.Application No. is the uses of 201721233382.8 utility model patent
The method that silicone oil reduces resistance to sliding is added.And exempt from silication piston, since piston face does not have the accumulation of silicone oil, test sliding force
When, it is bound to cause sliding force increase.Therefore, there is an urgent need to research and develop can reduce the blanking units for exempting from silication piston resistance to sliding and
Method for die cutting.
Invention content
For problems of the prior art, the present invention provides a kind of blanking units and method for die cutting of silication piston,
Solves the problem of when exempting from silication piston and matching with injector syringe, resistance to sliding increases.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former and die cutting die formpiston, punching
Mold cavity block is equipped with punching, it is characterised in that:Circular ring shape is equipped with around punching stretch groove, institute on the die cutting die former
It states annular and stretches the center of circle of groove and the center of circle coincidence of punching, be provided on the holding pad of the die cutting die formpiston and drawn with annular
Stretch the annular convex platform of fit depressions.
It is 3-8mm that the annular, which stretches the internal ring wall of groove and the spacing of the inner wall of punching,.
The depth that the annular stretches groove is 2-5mm, and the width that annular stretches groove is 3-6mm.
The holding pad is bolted on die cutting die formpiston, and punching pin hole is provided on holding pad.
Using the method for die cutting of any blanking units for exempting from silication piston, steps are as follows:Piston film is inserted into
Into the punching of die cutting die former, when punching, the annular convex platform on holding pad, which presses against piston film and enters annular, stretches groove,
Tractive force is generated to piston on the piston film that drawing force passes between annular stretching groove and punching, makes piston that elasticity occur and becomes
Shape, piston punching face are tightly attached on the punching wall of former, and then the punching pin in die cutting die punch hole declines, from piston glue
On piece separates piston, obtains being punched and exempts from silication piston towards piston centre axis is inclined.
The diameter in piston punching face is less than the diameter of piston entirety.
It is poly- that the piston face is covered with tetrafluoroethene film, ethylene tetrafluoroethylene film, PET film or super high molecular weight
Vinyl film.
Beneficial effects of the present invention:The method for die cutting of the present invention is suitable for the film of multiple pistons composition, and piston is punched
The diameter in face be less than piston entirety diameter, the piston face be covered with tetrafluoroethene film, ethylene tetrafluoroethylene film,
Piston is inserted respectively into multiple punchings by PET film or polyvinyl resin with super-high molecular weight film, when punching, on holding pad
Annular convex platform presses against piston film and enters annular stretching groove, and drawing force passes to the piston glue between annular stretching groove and punching
On piece generates tractive force to piston, makes piston that flexible deformation occur, and piston punching face part is tightly attached on the punching wall of former, so
The punching pin in die cutting die punch hole declines afterwards, piston is separated from piston film, to obtain being punched towards in piston
Mandrel line is inclined to exempt from silication piston, and since this punching is tilted towards central axis, the separate needle cylinder wall being close to piston is living
Plug will not be in contact with needle cylinder wall when syringe slides, not will produce resistance to sliding.
Description of the drawings
Fig. 1 is the structural schematic diagram for the blanking units that the present invention exempts from silication piston.
Fig. 2 is piston and the utility model patent authorized obtained by the method for die cutting of the present invention(201721233382.8)'s
The comparison diagram of piston, the punching face of the method for die cutting of 1 present invention;2 are:The utility model patent authorized
(201721233382.8)Punching face.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The person skilled in the art of the range of invention and is not intended to limit the present invention, the field can make one according to the content of foregoing invention
A little nonessential modifications and adaptations.
As shown in Figure 1, a kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former 1 and punching
Mold formpiston 2 is cut, die cutting die former 1 is equipped with punching 3, is drawn equipped with circular ring shape around punching 3 on the die cutting die former 1
Groove 4 is stretched, the annular stretches the center of circle of groove 4 and the center of circle of punching 3 and overlaps, and annular stretches internal ring wall and the punching 3 of groove 4
Inner wall spacing be 3-8mm, annular stretch groove 4 depth be 2-5mm, annular stretch groove 4 width be 3-6mm.
It is provided on the holding pad 6 of the die cutting die formpiston 2 and stretches 4 matched annular convex platform 8 of groove, institute with annular
It states holding pad 6 to be bolted on die cutting die formpiston 2, punching pin hole 71 is provided on holding pad 6, punching is equipped in punching pin hole
Son 7.
Using the method for die cutting of the above-mentioned blanking units for exempting from silication piston, steps are as follows:Piston film is inserted into punching
In the punching of mold cavity block, when punching, the annular convex platform on holding pad, which presses against piston film and enters annular, stretches groove, drawing force
Tractive force is generated to piston on the piston film passed between annular stretching groove and punching, makes piston that flexible deformation occur, it is living
Plug punching face is tightly attached on the punching wall of former, and then the punching pin in die cutting die punch hole declines, from piston film
Piston is separated, obtains being punched and exempts from silication piston towards piston centre axis is inclined(As shown in Figure 2).
The method for die cutting of the present invention is suitable for the film of multiple pistons composition, and the diameter in piston punching face 91 is less than piston
9 whole diameters, the piston face are covered with tetrafluoroethene film, ethylene tetrafluoroethylene film, PET film or supra polymer
Piston is inserted respectively into multiple punchings by weight ethylene resin film, when punching.
The utility model patent for being punched inward-facing inclined piston and authorized that method for die cutting of the present invention obtains
(201721233382.8)The piston in obtained jagged arc punching face(Normal silication), compared on sliding capability
Compared with meeting the requirement of YBB00082004-2015.As shown in the table:
No. 1 piston is that jagged arc is punched face;
No. 2 pistons are the intilted punching face of impulse- free robustness.
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (7)
1. a kind of blanking units for exempting from silication piston, the blanking units are divided into die cutting die former(1)With die cutting die formpiston
(2), die cutting die former(1)It is equipped with punching(3), it is characterised in that:The die cutting die former(1)It is upper to surround punching(3)
Groove is stretched equipped with circular ring shape(4), the annular stretching groove(4)The center of circle and punching(3)The center of circle overlap, the blanking die
Has formpiston(2)Holding pad(6)On be provided with annular stretch groove(4)Matched annular convex platform(8).
2. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that:The annular stretches groove(4)
Internal ring wall and punching inner wall spacing be 3-8mm.
3. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that:The annular stretches groove(4)
Depth be 2-5mm, annular stretch groove(4)Width be 3-6mm.
4. the blanking units according to claim 1 for exempting from silication piston, it is characterised in that:The holding pad is solid by bolt
It is scheduled on die cutting die formpiston, punching pin hole is provided on holding pad(71).
5. utilizing the method for die cutting of any blanking units for exempting from silication piston of claim 1-4, it is characterised in that step
It is as follows:Piston film(5)It is inserted into die cutting die former(1)Punching(3)In, when punching, the annular convex platform on holding pad
(8)It presses against piston film and enters annular stretching groove(4), drawing force pass to annular stretch groove(4)With punching(3)Between work
It fills in and tractive force is generated to piston on film, make piston that flexible deformation occur, piston is punched face(91)It is tightly attached to the punching wall of former
On, then die cutting die formpiston(2)Punching pin hole(71)Interior punching pin(7)Decline, from piston film(5)It is upper to separate piston, it obtains
Punching exempts from silication piston towards piston centre axis is inclined.
6. the method for die cutting of the blanking units according to claim 5 for exempting from silication piston, it is characterised in that:The piston punching
Section(91)Diameter be less than piston entirety diameter.
7. the method for die cutting of the blanking units according to claim 5 for exempting from silication piston, it is characterised in that:The piston table
Face is covered with tetrafluoroethene film, ethylene tetrafluoroethylene film, PET film or polyvinyl resin with super-high molecular weight film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810471808.6A CN108687864A (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units and method for die cutting for exempting from silication piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810471808.6A CN108687864A (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units and method for die cutting for exempting from silication piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108687864A true CN108687864A (en) | 2018-10-23 |
Family
ID=63847715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810471808.6A Pending CN108687864A (en) | 2018-05-17 | 2018-05-17 | A kind of blanking units and method for die cutting for exempting from silication piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108687864A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040099994A1 (en) * | 2001-05-11 | 2004-05-27 | West Pharmaceutical Services Deutschland Gmbh & Co. Kg | Pharmaceutical syringe piston and method and device therefor |
| JP2012147859A (en) * | 2011-01-17 | 2012-08-09 | Sumitomo Rubber Ind Ltd | Gasket for prefilled syringe, method of manufacturing the same, and prefilled syringe |
| CN202933324U (en) * | 2012-11-23 | 2013-05-15 | 郑州市翱翔医药包装有限公司 | Film-coated rubber piston for pre-embedded injector |
| US20140062036A1 (en) * | 2012-08-30 | 2014-03-06 | Sumitomo Rubber Industries, Ltd. | Laminated gasket |
| JP2017030079A (en) * | 2015-07-30 | 2017-02-09 | 住友ゴム工業株式会社 | Punching device and gasket punched by its device |
| CN205995998U (en) * | 2016-08-30 | 2017-03-08 | 郑州翱翔医药科技股份有限公司 | A kind of piston punching auxiliary device |
| CN206081234U (en) * | 2016-07-27 | 2017-04-12 | 郑州翱翔医药科技股份有限公司 | Syringe is with a vulcanization molding tectorial membrane piston |
| CN107696357A (en) * | 2017-09-30 | 2018-02-16 | 郑州翱翔医药科技股份有限公司 | A kind of production method of pre-encapsulated injector rubber piston |
| CN208179716U (en) * | 2018-05-17 | 2018-12-04 | 郑州翱翔医药科技股份有限公司 | A kind of blanking units for exempting from silication piston |
-
2018
- 2018-05-17 CN CN201810471808.6A patent/CN108687864A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040099994A1 (en) * | 2001-05-11 | 2004-05-27 | West Pharmaceutical Services Deutschland Gmbh & Co. Kg | Pharmaceutical syringe piston and method and device therefor |
| JP2012147859A (en) * | 2011-01-17 | 2012-08-09 | Sumitomo Rubber Ind Ltd | Gasket for prefilled syringe, method of manufacturing the same, and prefilled syringe |
| US20140062036A1 (en) * | 2012-08-30 | 2014-03-06 | Sumitomo Rubber Industries, Ltd. | Laminated gasket |
| CN202933324U (en) * | 2012-11-23 | 2013-05-15 | 郑州市翱翔医药包装有限公司 | Film-coated rubber piston for pre-embedded injector |
| JP2017030079A (en) * | 2015-07-30 | 2017-02-09 | 住友ゴム工業株式会社 | Punching device and gasket punched by its device |
| CN206081234U (en) * | 2016-07-27 | 2017-04-12 | 郑州翱翔医药科技股份有限公司 | Syringe is with a vulcanization molding tectorial membrane piston |
| CN205995998U (en) * | 2016-08-30 | 2017-03-08 | 郑州翱翔医药科技股份有限公司 | A kind of piston punching auxiliary device |
| CN107696357A (en) * | 2017-09-30 | 2018-02-16 | 郑州翱翔医药科技股份有限公司 | A kind of production method of pre-encapsulated injector rubber piston |
| CN208179716U (en) * | 2018-05-17 | 2018-12-04 | 郑州翱翔医药科技股份有限公司 | A kind of blanking units for exempting from silication piston |
Non-Patent Citations (2)
| Title |
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| 刘海洪;刘梅玲;蒋峰;范振青;: "超高分子量聚乙烯微粉在溴化丁基橡胶瓶塞中的应用", 橡塑技术与装备, no. 01, pages 52 - 55 * |
| 陈雷,宋强,马成普,王峰,崔祥生: "安全注射器橡胶活塞的研制", 橡胶工业, no. 01, pages 39 - 41 * |
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